Anti-glare protection device

Abstract

An anti-glare protection device, for example a pair of welding goggles, a welding mask or a welding helmet, includes a supporting part with a sight opening ( 3 ), an optical filter element arranged in the sight opening, and a protective plate ( 1 ), which is mounted or can be mounted on the supporting part such covering the optical filter element. For the protection of the filter element against contamination with dirt and in order to protect the wearer of the anti-glare protection device against undesirable gases, smoke and dirt, a seal ( 4 ) made out of an elastically compressible material is disposed either between the supporting part and the protective plate ( 1 ) or between the filter element and the protective plate ( 1 ). The seal extends substantially around the sight opening and is advantageously affixed either to the supporting part, to the protective plate ( 1 ), or to the filter element.

1. An anti-glare protection device comprising a supporting part ( 5 ), an active optical filter element ( 6 ) arranged within a sight opening ( 3 ) of the supporting part ( 5 ) and with a transmittance being controlled by an optical sensor ( 7 ), and a protective plate ( 1 ) affixable to the supporting part ( 5 ) so as to cover the optical filter element ( 6 ) and the sensor ( 7 ), wherein, for protecting the filter element ( 6 ) and the sensor ( 7 ) against gases, smoke and dirt, a seal ( 4 ,  4 ′) substantially extending around the sight opening ( 3 ) and the sensor ( 7 ) is disposed between one of the supporting part ( 5 ) and the protective plate ( 1 ) or the filter element ( 6 ) and the protective plate ( 1 ), the seal consisting of an elastically compressible material and being affixed to only one of the supporting part ( 5 ), the protective plate ( 1 ) or the optical filter element ( 6 ) and rendering reducing a flow of gas therepast. 
     
     
       2. The anti-glare protection device in accordance with  claim 1 , wherein the seal ( 4 ) is affixed with one of a direct material to material connection or a positive form fit. 
     
     
       3. The anti-glare protection device according to claim  1 , wherein the seal is formed from a foamed plastic material. 
     
     
       4. The anti-glare protection device according to  claim 1 , wherein the seal ( 4 ) is formed from a material selected from the group consisting of polyurethane and silicone plastic. 
     
     
       5. The anti-glare protection device according to  claim 1 , wherein the filter element ( 6 ) comprises at least one liquid crystal element and means for controlling the at least one liquid crystal element based upon a signal from the optical sensor ( 7 ).